return {
    "am",
    "is",
    "are",
    "I",
    "you",
    "he",
    "she",
    "I am Sally.",
    "He is an architect.",
    "She is an engineer.",
    "It is new.",
    "We are roommates.",
    "You are new.",
    "They are architects.",
    "I is are am an architect.",
    "You am are is welcome.",
    "It am is are new.",
    "They is are am roommates.",
    "We am is are engineers.",
    "She am is are Sally.",
    "He is new.",
    "They are roommates.",
    "My name is Joe.",
    "I am Mary.",
    "It is S-M-I-T-H.",
    "You are welcome.",
    "She is an architect.",
    "We are engineers.",
}
